Network Working Group DeKok, Alan
INTERNET-DRAFT FreeRADIUS
Obsoletes: 4282
Category: Standards Track
<draft-ietf-radext-nai-01.txt>
8 January 2013
The Network Access Identifier
draft-ietf-radext-nai-01
Abstract
In order to provide inter-domain authentication services, it is
necessary to have a standardized method that domains can use to
identify each others users. This document defines the syntax for the
Network Access Identifier (NAI), the user identity submitted by the
client prior to accessing network resources. This document is a
revised version of RFC 4282 [RFC4282], which addresses issues with
international character sets, as well as a number of other
corrections to the previous document.
Status of this Memo
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This Internet-Draft will expire on July 8, 2013.
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DeKok, Alan Standards Track [Page 2]INTERNET-DRAFT The Network Access Identifier 8 January 2013Table of Contents
Appendix A - Changes from RFC4282 ............................ 3
1. Introduction ............................................. 4
1.1. Terminology ......................................... 4
1.2. Requirements Language ............................... 5
1.3. Purpose ............................................. 6
1.4. Motivation .......................................... 6
2. NAI Definition ........................................... 7
2.1. UTF-8 Syntax and Normalization ...................... 7
2.2. Formal Syntax ....................................... 7
2.3. NAI Length Considerations ........................... 8
2.4. Support for Username Privacy ........................ 9
2.5. International Character Sets ........................ 9
2.6. The Normalization Process ........................... 10
2.7. Use in Other Protocols .............................. 11
2.8. Routing inside of AAA Systems ....................... 11
2.9. Compatibility with Email Usernames .................. 12
2.10. Compatibility with DNS ............................. 12
2.11. Realm Construction ................................. 13
2.11.1. Historical Practices .......................... 14
2.12. Examples ........................................... 15
3. Security Considerations .................................. 15
4. IANA Considerations ...................................... 16